I have a 2008 LTZ Duramax 2500. Just purchased a 35 ft Everest fifth wheel last night. The truck has a 4 inch lift and now I need to either lower the truck or raise up the fifth wheel. Any ideas out there? Has anyone done this? The axles are already riding on the springs of the trailer, I've already lowered the hitch in the truck and raised the hitch pin on the trailer.